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Multi-Wavelength Study of the 3B/X1.2 Flare Observed on 2003 October 26 View all abstracts by submitter

Hui Li   Submitted: 2005-10-01 23:41

We report the results from the multi-wavelength study of the 3B/X1.2 two-ribbon disk flare (S15E44), which was well observed by both ground-based and space-borne instruments. Two pairs of conjugate kernels - K1 and K4, and K2 and K3 - in Hα images are identified for this flare linked by two different systems of EUV loops. K1 and K4 correspond to the two 17 GHz and 34 GHz microwave sources observed by the Nobeyama Radioheliograph (NoRH), while K2 and K3 have no corresponding microwave source. Optical spectroscopic observations suggest that all the four kernels are possible precipitating sites of non-thermal electrons. Thus the amount of deposited energy in K2 and K3 should be less than 100 keV. Two-dimensional distributions of the full widths at half maximum (FWHM) of the Hα profiles and the line-of-sight (LOS) velocities derived from the CaII 8542 profiles indicate that the largest FWHM and LOS velocity tend to be located near the outer edges of Hα kernels, which is consistent with the scenario of current two-ribbon flare models and previous results. When non-thermal electron bombardment is present, the observed Hα and CaII 8542 profiles are similar to previous observational and theoretical results, while the HeI 10830 profiles are different from the theoretical ones. This puts some constraints on the future theoretical calculation for the HeI 10830 line.

Authors: Hui Li, Jianping Li, Cheng Fang, Brigitte Schmieder, Arkadiusz Berlicki and Qiusheng Du
Projects: None

Publication Status: Chin. J. Astron. Astrophys., in press
Last Modified: 2005-10-01 23:41
Go to main E-Print page  Fast magnetoacoustic waves in curved coronal loops I. Trapped and leaky modes  Observation of Loop Connectivity Change in a Solar Flare Triggered by Loop-Loop Interaction  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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